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Latitude at LAN - USCG 2nd/3rd Mate Unlimited Tonnage Exam: Q117 Navigation Problems Oceans - CNAV
Автор: Blue Water Basics
Загружено: 2025-11-05
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This video explains how to latitude at LAN given your observed altitude.
Questions and comments are encouraged!
This is sample problem from unlimited tonnage second/third mate Q117 Navigation Problems (Oceans), offering clear, step-by-step solutions to master the key concepts.
On 12 September your 0600 zone time (ZT) fix gives you a position of LAT 22°51.9'N, LONG 133°40. 1'W. Your vessel is on course 062°T, and your speed is 12.3 knots. Local apparent noon (LAN) occurs at 1142 ZT, at which time a meridian altitude of the Sun's upper limb is observed. The observed altitude (Ho) for this sight is 70°33.2'. What is the calculated latitude at LAN?
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